ATE363760T1 - SYSTEM AND METHOD FOR PROTECTING AN ELECTRIC MOTOR AND ITS CONTROL CIRCUIT, AND AN ELECTRIC MOTOR - Google Patents

SYSTEM AND METHOD FOR PROTECTING AN ELECTRIC MOTOR AND ITS CONTROL CIRCUIT, AND AN ELECTRIC MOTOR

Info

Publication number
ATE363760T1
ATE363760T1 AT99957782T AT99957782T ATE363760T1 AT E363760 T1 ATE363760 T1 AT E363760T1 AT 99957782 T AT99957782 T AT 99957782T AT 99957782 T AT99957782 T AT 99957782T AT E363760 T1 ATE363760 T1 AT E363760T1
Authority
AT
Austria
Prior art keywords
switches
electric motor
protecting
control
surge current
Prior art date
Application number
AT99957782T
Other languages
German (de)
Inventor
Marcos Schwarz
Paulo Dainez
Original Assignee
Whirlpool Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whirlpool Sa filed Critical Whirlpool Sa
Application granted granted Critical
Publication of ATE363760T1 publication Critical patent/ATE363760T1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)
  • Protection Of Generators And Motors (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

A system and a method for protecting electric motors and their respective control circuits are described, wherein it is possible to distinguish whether a situation of surge current results from a overload or from a short-circuit on the motor (1). This is achieved by means of a system for protecting an electric motor (1) and its control circuit (2), the motor speed control being carried out by means of a set of switches (Ch), the system comprising a control central (7) capable of measuring the electricity conduction time (Tc) of each of the switches (Ch) and to measure the time (Td) passed between the beginning of conduction of one of the switches (Ch) and the occurrence of a surge current, the central (7) making a comparison of said times (Td, Tc) and being capable of determining whether said surge current results from an overload or a short-circuit of the electric motor (1) or on one of the switches (Ch). The invention also refers to a method for protecting an electric motor (1) and its control circuit (2), the speed control of which is carried out by means of a set of switches (Ch), wherein the method comprises a step of measuring the electricity conduction time (Tc) of each of the switches (Ch), a step of measuring the time (Td) passed between the beginning of conduction of one of the switches (Ch) and the occurrence of a surge current, and a step of comprising said times (Td, Tc) and consequently determining whether said surge current results from an overload or from a short-circuit of the motor (1). In addition, the present invention refers to an electric motor (1) that is controlled by a set of switches (Ch), the control of the switches (Ch) being carried out by a control central (7) capable of measuring and comparing said times (Td, Tc).
AT99957782T 1998-11-12 1999-11-11 SYSTEM AND METHOD FOR PROTECTING AN ELECTRIC MOTOR AND ITS CONTROL CIRCUIT, AND AN ELECTRIC MOTOR ATE363760T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR9804608-0A BR9804608A (en) 1998-11-12 1998-11-12 System and method for protecting an electric motor and its control circuit and electric motor

Publications (1)

Publication Number Publication Date
ATE363760T1 true ATE363760T1 (en) 2007-06-15

Family

ID=37989797

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99957782T ATE363760T1 (en) 1998-11-12 1999-11-11 SYSTEM AND METHOD FOR PROTECTING AN ELECTRIC MOTOR AND ITS CONTROL CIRCUIT, AND AN ELECTRIC MOTOR

Country Status (10)

Country Link
US (1) US6853523B1 (en)
EP (1) EP1131873B1 (en)
JP (1) JP2002531044A (en)
KR (1) KR100628487B1 (en)
CN (1) CN1201457C (en)
AT (1) ATE363760T1 (en)
BR (1) BR9804608A (en)
DE (1) DE69936222T2 (en)
TR (1) TR200101329T2 (en)
WO (1) WO2000030243A2 (en)

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GB2380623B (en) * 2001-10-05 2003-11-12 Minebea Co Ltd Motor control circuit overcurrent protection
BRPI0501446A (en) * 2005-04-29 2006-12-12 Brasil Compressores Sa method of protection against breakage of lubricating oil film in hermetic compressor bearings
US7443142B2 (en) * 2005-12-21 2008-10-28 Temic Automotive Of North America, Inc. Active rectification of alternator output without using a position sensor
CN101055295B (en) * 2006-04-12 2010-04-21 台达电子工业股份有限公司 Fan system and power supply monitoring device thereof
RU2326480C1 (en) * 2007-04-04 2008-06-10 Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет Method of control and provision of survivability of three phase induction motor
KR101182881B1 (en) 2008-02-29 2012-09-13 미쓰비시덴키 가부시키가이샤 Driving controller of ac motor
RU2449445C1 (en) * 2008-02-29 2012-04-27 Мицубиси Электрик Корпорейшн Driving controller for alternating current motor
RU2415504C2 (en) * 2009-03-23 2011-03-27 Государственное образовательное учреждение высшего профессионального образования "Вологодский государственный технический университет" (ВоГТУ) Device to protect three-phase asynchronous motors
DE102010030240A1 (en) 2010-06-17 2011-12-22 BSH Bosch und Siemens Hausgeräte GmbH Method and device for adjusting a speed range of an electric motor
RU2460190C1 (en) * 2011-04-06 2012-08-27 Государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" Method to control and provide robustness of three-phase induction motor of rotary or reciprocal motion
RU2444104C1 (en) * 2011-07-04 2012-02-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Азово-Черноморская государственная агроинженерная академия" (ФГОУ ВПО АЧГАА) Device to protect submersible pump motor against overload and dry running
KR101266259B1 (en) 2012-05-15 2013-05-22 영 춘 정 Apparatus and method for protecting electric controller of brushless dc motor from power failure and sourge
US10340828B2 (en) * 2017-04-27 2019-07-02 Steering Solutions Ip Holding Corporation Disturbance observer for permanent magnet direct current machines
CN112491009B (en) * 2020-11-15 2023-02-10 陕西航空电气有限责任公司 Excitation positive short-circuit fault protection method for generator controller of aviation power system
RU206663U1 (en) * 2021-05-20 2021-09-21 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет путей сообщения" (СГУПС) DEVICE FOR ELECTRIC MOTOR LOAD CONTROL

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Also Published As

Publication number Publication date
WO2000030243A2 (en) 2000-05-25
KR20010092730A (en) 2001-10-26
JP2002531044A (en) 2002-09-17
TR200101329T2 (en) 2001-10-22
BR9804608A (en) 2000-10-24
CN1201457C (en) 2005-05-11
US6853523B1 (en) 2005-02-08
DE69936222D1 (en) 2007-07-12
EP1131873A2 (en) 2001-09-12
KR100628487B1 (en) 2006-09-26
DE69936222T2 (en) 2008-01-24
EP1131873B1 (en) 2007-05-30
WO2000030243A3 (en) 2000-08-31
CN1333938A (en) 2002-01-30

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